Water Efficiency (WE) Flashcards by Jaydee Daduut

What systems can be
submetered for WE Credit-Water
Metering?

Two or more of the following:
-Irrigation
-Indoor plumbing fixtures and
fittings
-Domestic hot water
-Boilers
-Reclaimed water
-Other process water

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What percent of water
distribution must be
submetered for irrigation,
indoor plumbing fixtures,
domestic hot water, or other
process water?

80% must be submetered

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What frequency must
metered data be compiled
for Building-Level-Water
Metering?

Monthly and annual
summaries

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How long must a project
commit to sharing metering
data with USGBC and when
must the sharing begin?

A five-year period beginning
on the date the project
accepts LEED certification or
typical occupancy, whichever
comes first

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What type of water is
municipally supplied
claimed/recycled water?

Using EPA’s WaterSense
Water Budget Tool

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What minimum percent
reduction of outdoor water
use is required from a
calculated baseline?

30% reduction from the
calculated baseline for the
site’s peak watering month

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How can reductions be
achieved for WE
Prerequisite Outdoor Water
Use Reduction?

Plant species selection
AND
Irrigation efficiency
Alternative water sources
CANNOT be used for the
prerequisite

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What areas are excluded
from outdoor water use
reduction calculations?

Nonvegetated surfaces
(permeable and
impermeable pavement)
are excluded. Athletic
fields, food gardens, and
playgrounds can be
included or excluded at
the project teams’
discretion.

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What percent reduction is
required for WE Credit
Outdoor Water Use
Reduction?

50% from the calculated
baseline for the site’s peak
watering month.

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How can reductions beyond 30% be
achieved for outdoor water use
reduction?

Any combination of efficiency,
alternative water sources, and
smart scheduling technologies

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What reduction is automatically earned when installing smart irrigation controls for WE Credit Outdoor Water Use Reduction?

15% from the baseline

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What indoor water use
reduction percent earns
exemplary performance?

55%

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What must be conducted for
Cooling Tower Water Use?

A one-time potable water
analysis measuring at least
the required five control
parameters

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What minimum number of
cooling tower cycles would
earn a project 2 points?

A 10-cycle minimum.

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Any individual energy end
use that represents ______
percent of the total annual
consumption of the
building must have an
advanced energy meter?

10%

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What is the default gender
ratio for indoor water use
reduction calculations?

1 to 1; i.e. 50/50 male to
female

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What fixtures and fittings
must be included in the
indoor water use reduction
calculations?

Water closets, urinals,
lavatory faucets, showers,
kitchen sink faucets, and pre-
rinse spray valves

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What is WaterSense?

WaterSense is a partnership
program sponsored by EPA,
helping consumers identify
water-efficient products and
programs.

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Tool that calculates a baseline landscape water requirement (WR) of a typical landscape?

EPA Water Sense Budget Tool

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Landscape Water requirement information is used for which WE-Prerequisite/credit?

Outdoor Water Use Reduction

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What Equipment should be installed in cooling towers and evaporative condensers per WE-Prerequisite-Indoor Water Use Reduction?

Make up water meters
-Conductivity controllers and overflow alarms
-Efficient drift eliminators reduce drift to a maximum of .002% of recirculated water volume for counterflow towers and 0.005% of recirculated water flow for cross-flow towers.

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Types of fixtures that can have Water Sense labels?

Tank type toilets
Water using urinals
Private lavatory faucets
Shower heads

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What types of Fixtures not labeled by Water Sense and must comply with percentage reduction criteria for WE-Prerequisite:
Indoor Water Use Reduction?

Tankless toilets
Composting toilets and waterless toilets
Waterless urinals
Public lavatory faucets

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What area should be excluded from landscape area calculations for WE Credit-Outdoor Water Use Reduction?

A. Permeable pavement
B Food garden
C. Vegetated playground
D Athletic field

Vonvegetated surfaces, such as permeable or impermeable pavement, should be excluded from landscape area calculations.
Athletic fields and playgrounds (if vegetated) and food gardens may be included or excluded at the project team’s discretion.

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What Information is required by the USGBC Indoor Water Use Calculator in order to determine water consumption ?

Project occupancy numbers Gender ratio Days of operation Fixture types used in the project

Provide 3 examples of potable water sources that must be metered for a project pursuing LEED certification.

Public Water Supply On-site Well On-site potable water treatment system

What percent reduction should a project team assume if they specify weather-based irrigation controllers to achieve WE- Outdoor Water Use Reduction?

15%

What is the definition of landscape water requirement?

Total amount of water used during peak water season (summer) for landscaping areas.

How should team address different building users when making calculations for indoor water use?

Project team must calculate each group separately using the USGBC spreadsheet by adding one tab for each user type to the spreadsheet.

For Project pursuing LEED certification. Which 3 factors should building owner confirm with the utility company for building-level metering?

Location of meter Accessibility to meter Reporting system comm to utility

LEED BD+C rating system takes Efficiency First approach for which prerequisites?

WE- Indoor Water Use Reduction WE-P Outdoor Water Use Reduction EA- Minimum Energy Performance

What is the minimum water use reduction for WE-Prerequisite: Outdoor Water Use Option 2?

30% from baseline of LWR

Using smart sensor technology that meets WaterSense criteria. What percent water reduction of outdoor water use is automatically achieved from baseline?

15%

What alternative water source can be used for irrigation?

Reclaimed Wastewater Gray Water Swimming Pool Backwash Filter Reefer Condensate Rainwater Stormwater Foundation drain water Steam System Condensate Fluid Cooler Dishcharge Food steamer discharge Combination oven discharge Industrial process water Fire pump test water, Municipally supplied teated waste water, Ice machine condensate

What are the Concerns when considering alternative water sources?

Salinity Timing and reliability of alternative water supply

Ineligible water sources for WE-C Indoor Water Use Reduction?

Raw water from natural surface bodies of water Streams Rivers Groundwater Well water Seawater Water discharged from open-loop geothermal system

First step to implement WE- Cooling tower water use?

Professional must perform chemical analysis

What information used for EPA Water Sense Water Budget Tool to estimate a project's evapotranspiration rate for the peak watering month?

Project zip code.

WE-C Cooling Tower Water Use cycles of concentration?

Number of times volume of water can circulate through cooling tower before mineral concentration causes deficiencies in system

Required flow rate for Water Sense aerators in private lavatories?

At least .8 gpm at 20 psi Max 1.5 gpm at 60 psi

Typical private faucet applications?

Residential bathroom sinks Hotel or motel bathroom sinks Dormitory bathroom sinks Patient room sinks Patient bathroom sinks in hospitals or nursing homes

Typical public faucet applications?

Restroom sinks School classroom sinks

What types of Sinks are excluded from indoor water use reduction calculations?

Janitor sinks Laboratory sinks Commercial kitchen sinks Medical sinks Soiled utility room flushing/handwashing sinks Clean utility room handwashing sinks

What Documentation is required for WE-Prerequisite: Indoor Water Use Reduction?

Product data sheet (cut sheets) and fixture schedules

Baseline flow rate for public lavatory faucets?

0.5 gpm @ 60psi

Baseline flow rate for private lavatory faucets?

2.2 gpm

Default gender ratio for FTE occupants?

50:50

What areas can be excluded at the project team's discretion when documenting compliance with WE- Outdoor Water Use Reduction?

Vegetated playgrounds Athletic fields Food gardens Urban agricultural areas

Water subsystems that must have 100% of their sources submetered for WE-C Water Metering

Boilers Reclaimed Water

Factors used to calculate a project's landscape water requirement?

Plant Type Plant Density Irrigation Needs

Information required by USGBC Indoor Water Use Calculator for design case water use for a public restroom?

Fixture type Flush/flow rate Manufacturer and model number Percentage of occupant types such as FTEs and vistors using the fixtures

For Healthcare projects, what 5 systems need water meters installed in addition to the metering requirements?

Purified water systems (reverse Osmosis) Filter Backwash Water Water use in dietary department Water use in laundry Water use in laboratory Water use in central sterile and processing department Water use in physiotherapy and hydrotherapy and treatment areas Water use in surgical suite Closed Looped hydronic system makeup water Cold water makeup for domestic hot water systems

Information a plumbing engineer requires for inputting data in the USGBC Indoor Water Use Calculator?

Project occupancy Gender ratio Days of operation Fixture types used in the project

Information required for calculating water use for each fixture type?

Fixture flush or flow rate Duration of use Number of users Uses per person per day

Equipment that may be excluded from indoor water use calculations?

-Appliances and equipment that use water on materials intended for human consumption. -Fixtures whose flow rates are regulated by health codes. -Process water sinks

Documentation needed to meet the prescriptive method requirements for WE- Prerequisite: Indoor Water Use Reduction

Product cutsheets Fixture schedule

WE credits available for exemplary performance?

Indoor Water Use Reduction (55% reduction)

Exemplary performance for WE- Indoor Water Use Reduction?

55% water savings

Projects exempt from meeting WE-Prerequisite: Outdoor Water Use Reduction

Zero lot line and other similar projects with no landscaping areas.

Which factors are included in Outdoor Water Reduction calculations?

Plant type, plant density, irrigation needs.

Eligible alternative sources to potable water for indoor water use?

Municipality supplied reclaimed water - "Purple Pipe" Graywater Rainwater Stormwater Treated seawater condensate Foundation dewatering water Used process water Reverse osmosis reject water

Documentation a team should submit to pursue WE-Prerequisite: Outdoor Water Use Option 1 no irrigation?

Site plan including: Vegetated areas Narrative for plant species and their water requirements

Additional water consuming appliances that must meet the requirements of WE-Prerequisite: Indoor Water Use Reduction for Healthcare, Retail, Schools, and Hospitality?

Dishwashers Food Steamers Combination Ovens

Areas a landscape architect can include/exclude at the project teams discretion when determining outdoor water use reduction for a high school building project.

Athletic fields Vegetated playgrounds Food gardens Urban agricultural areas

Locations where lavatory fixtures that are considered private per UPC, IPC, NSPC?

Residential, Hospitality, Medical

WE- Indoor Water Use Reduction requirements for cooling tower and evaporative condenser process?

Equipment must have: -Makeup Water Meters -Conductivity controllers and overflow alarms -Efficient drift eliminators

How can building owner share building level water meter data with USGBC?

Through third party data source or USGBC-approved data template.

Duration a building owner must share building level water meter data with USGBC

5 years or when building owner/lessee changes.

What is allowed to be used to reduce a project's landscape water requirement for WE-Prerequisite: Outdoor water use reduction? Choose 2 answers A. Smart scheduling technologies B. Rainwater C. Plant species D. Irrigation system efficiency

C & D Reductions can only be achieved through plant species selection and irrigation system efficiency, which reduce total water demand, not just portable water consumption.

What area should be excluded from landscape area calculations for WE Credit Outdoor Water Use Reduction? A. Permeable pavement B. Food garden C. Vegetated playground D. Athletic field

A. Nonvegetated surfaces, such as permeable or impermeable pavement, should be excluded from landscape area calculations. Athletic fields and playgrounds (if vegetated) and food gardens may be included or excluded at the project team's discretion. Choice A is the correct answer.

Water Efficiency (WE) Flashcards

(70 cards)